Fuse-box.



Patented Oct. 2|, |902.

J. C. STEWART &. W. HURN.

FUSE BOX.

(Application vhd Api- 98, 1902.)

2 Shoots-Sheet I.

(lo Model.)

No. 7`||,543. Patented Oct. 2|, |902.

J. C. STEWART &. W. HORN.

FUSE BOX.

Mppliwian am Apr. ne, 1902.)

(In Nadal.) 2 Shoots-Shut 2.

wiigzsses TH: oms Urns co. PHoTaLnuo., WASHINGTON. n c

UNITED STATES PATENT OEEICE.

JOHN O. STEWART AND WALTER HORN, OE NEWARK, OHIO.

FUSE-BOX.

SPECIFICATION forming part of Letters Patent No. 711,543, dated October 21, 1902.

Application led April 28, 1902.

To al?, whom it may concern:

Be it known that we, JOHN O. STEWART and XVALTER HORN, citizens of the United States, and residents of Newark, Licking county, Ohio, have invented certain new and useful Improvements in Fuse-Boxes, of which the following is a specification.

Our invention relates to that class of fuseboxes having a fusible safety-strip.

The objects of our invention are to provide a fuse-box in which the safety-strip may be readily removed and replaced from below by means of a rod or pole in the hands of the operator and to provide abox. which shall be entirely waterproof. These objects we accomplish by the construction illustrated in the accompanying drawings, in which- Figure l is a front perspective of our improved use box with parts broken away. Fig.2 isa vertical longitudinal section through the same with the pole engaged with the socket on the fuse block or carrier. Fig. 2 is a section on line 2 2, Fig. l. Fig. 3 is a detail view of the fuse block or carrier removed and the pole disconnected. Fig. 4 is a plan of the fuse block or carrier. Fig. 5 is a detail view of the line-wire and fuse-wire terminals.

A designates the inclosing case, preferably of cast-iron and provided in its opposite end walls with apertures a o. for the line-wires L L and having projecting flanges a' ce' overhanging said apertures to prevent the entrance of water, snow, &c. The lower open end of the case A is provided with a downwardly-swinging door A, hinged at one edge by means of ears a2 a3, cast integral with the case and door, respectively, and connected, as usual, by piutles r1.4. The free edge ot the door is provided with a suitable latch a5, adapted to snap over a catch a6, integral with the side of the case.

B is a hollow porcelain fuse-box open at its bottom and provided at its ends with apertures l) b for the line-wires L L, and B' is the porcelain fuse block or carrier, of a size to enter the lower open end of the box B. The box B is secured to the top wall of the case A by means of a screw b'. The ends of the line-wires are each held between two clamping-plates D D, each pair of plates being secured to the top wall of the box by a screw d d, passed through them, and the upper Serial No. 104,906. (No model.)

n plate D of each pair is provided with a projection df, which enters an aperture d2 in the lower plate D', so as to hold the latter from turning on the screw d. The upper plate D of each pair is further provided with a depending terminal d3. The fuse-block B is recessed at its ends on its upper face and provided therebetween with an oblique groove b2 for the fusible wire or strip F.

E E are spring jacks or clips secured to the block B' in the recessed ends thereof by screws e e, which also pass through strips or plates e e', between which and the heads ot' the screws the ends of the fuse wire or strip are held. The spring-jacks E E are further held by screws e2 e2, which pass up through the block B into the plates e/ e', which overlie the bases of the spring-jacks. Vhen the fuse-block B is inserted in the fuse-box B, the spring-jacks E E will grasp the terminals d3, and so hold the block in place and connect the ends ot the line-wires by the fusible strip.

G is a pole connection or socket secured to the lower side of fuse-blockB' and provided with a bayonet-slot g. The pole-socket G may be secured inl any desired manner, one way being by providing it with ears g g at its upper end, which embrace an integral lug or boss o8 on the lower face of the fuse-block, to which they are secured by screws.

P designates the pole, of a length to reach rom the operator to the overhead fuse-boxes, and so obviate the use of aladder. This pole is adapted at its upper end to enter the socket G and is provided with a lateral projection p to enter the bayonet-slot, and so form a positive though separable connection between the pole and the fuse-block.

Should a fuse-wire burn out, the operator will take a pole P and with the upper end release the latch a5 and allow the door A to swing down, after which the operator will insert the upper end of the pole in the socket G and by a downward pull remove the fuseblock. There will be no danger to the operator, whose hands are not brought into proximity to the line-wires, and all danger from falls is likewise obviated.y A new fuse-wire will now be inserted and the fuse-block again elevated and replaced in the fuse-box, after which the pole will be disengaged and employed to close the door A. A great saving IOO of timewill alsof be effected by our pole i-n replacing burned-out fuses over the old way of getting up to the boxes by means of ladders.

What we claim is- 1. The combination with a fuse-box and its removable block or plug having a pole connection, of a pole for removing the said block or plug and provided at its upper end with means for separably engaging said pole connection.

2. The combination with a fuse-box, of a removable block or plug therefor provided on its under side with a pole connection or socket to receive a pole end; whereby the plug or block may be readily inserted and removed to replace the fuse.

3. As an improved article of manufacture a fuse plug or block provided with a pole socket or connection to receive a pole end; whereby the plug or block may be readily inserted and removed to replace the fuse.

4. The combination with the outer casing having a downwardly-swinging bottom provided with a latch releasable from below, of a fuse-box within the casing and having a downwardly-removable fuse block or plug provided with a pole connection or socket.

5. The combination with the open-bottom fuse-box having end apertures for the fusewires, wire-clamping devices and depending terminals, of a fuse block or plug to enter the lower end of the box and having spring-jacks to engage said terminals and clamps for the fuse-wire and a pole connection on the under side of the plug or block, substantially as described. f

6. The combination with the fuse-box having an open lower end, line-wire clamps and depending terminals, of a plug or block having spring-jacks to engage said terminals and fuse-wire clamps or binders, and a socket on the under side of the block or plug provided with a bayonet-slot.

In testimony whereof we affix our signatures in presence of two witnesses.

JOHN C. STEWART. WALTER HORN.

Witnesses:

W. G. TAAFEL, C. S. WEISGERBER. 

